Tow ball



FIG. 1 is a front, right and top perspective view of a tow ball, showing my design.

FIG. 2 is a rear, left and bottom perspective view thereof.

FIG. 3 is a front elevation view thereof.

FIG. 4 is a rear elevation view thereof.

FIG. 5 is a left side elevation view thereof.

FIG. 6 is a right side elevation view thereof.

FIG. 7 is a top plan view thereof.

FIG. 8 is a bottom plan view thereof.

FIG. 9 is a front, right and top perspective view of a second embodiment of a tow ball.

FIG. 10 is a rear, left and bottom perspective view of the second embodiment of the tow ball of FIG. 9 .

FIG. 11 is a front elevation view of the second embodiment of the tow ball of FIG. 9 .

FIG. 12 is a rear elevation view of the second embodiment of the tow ball of FIG. 9 .

FIG. 13 is a left side elevation view of the second embodiment of the tow ball of FIG. 9 .

FIG. 14 is a right side elevation view of the second embodiment of the tow ball of FIG. 9 .

FIG. 15 is a top plan elevation view of the second embodiment of the tow ball of FIG. 9 ; and,

FIG. 16 is a bottom plan elevation view of the second embodiment of the tow ball of FIG. 9 .

The broken lines shown in the drawings are included for the purpose of illustrating portions of the tow ball that form no part of the claimed design. 

CLAIM The ornamental design for a tow ball, as shown and described. 